<template>
  <el-container class="main-container">
    <!-- 头部区域 -->
    <el-header>
      <!-- 左侧的 logo -->
    
      <img src="../../assets/images/logo.png" alt="" />
      <!-- 右侧的菜单 -->
      <el-menu
        class="el-menu-top"
        mode="horizontal"
        background-color="#23262E"
        text-color="#fff"
        active-text-color="#409EFF"
      >
        <el-submenu index="1">
          <template slot="title">
            <!-- 头像 -->
            <img :src="$store.state.userInfo.user_pic" v-if="$store.state.userInfo.user_pic" alt="" class="avatar">
            <img src="../../assets/logo.png" alt="" v-else class="avatar" />
            <span>个人中心</span>
          </template>
          <el-menu-item index="1-1"><i class="el-icon-s-operation"></i>基本资料</el-menu-item>
          <el-menu-item index="1-2"><i class="el-icon-camera"></i>更换头像</el-menu-item>
          <el-menu-item index="1-3"><i class="el-icon-key"></i>重置密码</el-menu-item>
        </el-submenu>
        <el-menu-item index="2" @click="logout"><i class="el-icon-switch-button"></i>退出</el-menu-item>
      </el-menu>
    </el-header>
    <el-container>
      <!-- 左侧边栏区域 -->
      <el-aside width="200px">
        <div class="user-box">
          <img :src="userInfo.user_pic"  v-if='userInfo.user_pic' alt="">
          <img src="../../assets/logo.png" alt="" v-else />
          <span>欢迎 {{userInfo.nickname  ||  userInfo.username}}</span>
        </div>
        <!-- 渲染左侧菜单
              el-menu  router属性是开启路由模式  -->
        <el-menu
          default-active="1"
          class="el-menu-vertical-demo"
          background-color="#23262E"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          router
          >
          <!-- template 是模板标签不会渲染 dom结构,只会起到包裹的作用
                template  不是真实标签,所以不能再 template 上使用 :key -->
          <template v-for="item in  list">
          <!-- 不包含子菜单的“一级菜单” -->
          <el-menu-item :index="item.indexPath" :key="item.indexPath" v-if="!item.children"><i :class="item.icon"></i>{{item.title}}</el-menu-item>
          <!-- 包含子菜单的“一级菜单” -->
          <el-submenu :index="item.indexPath" :key="item.indexPath" v-else>
            <template slot="title">
              <i :class="item.icon"></i>
              <span>{{item.title}}</span>
            </template>
            <el-menu-item :index="childItem.indexPath"
             v-for="childItem  in item.children" :key="childItem.indexPath"><i :class="childItem.icon"></i>{{childItem.title}}</el-menu-item>
      
          </el-submenu>
          </template>

        </el-menu>

      </el-aside>

      <el-container>
        <!-- 页面主体区域 -->
        <el-main>

         <!--  设置二级路由的出口   -->
         <router-view></router-view>

        </el-main>
        <!-- 底部 footer 区域 -->
        <el-footer>© www.itheima.com - 黑马程序员</el-footer>
      </el-container>
    </el-container>
  </el-container>
</template>

<script>
import { mapState } from 'vuex';
export default {
  name: 'Main',
  created(){
    //1.页面已加载就调用 vuex 中的 actions 中的函数
    this.$store.dispatch('iniUserInfo')
    //页面加载调用 左侧菜单的获取数据
    this.getMenus()
  },
  computed:{
    //将 state中的 userInfo 映射为当前组件的计算属性
    ...mapState(['userInfo','token'])
  },
  data(){
    return{
      list:[]
    }
  },
  methods:{
    // 获取左侧菜单
    async getMenus(){
      const {data:res}  = await this.$axios('/my/menus',)
       if(res.code  !==0) return  this.$message.error('获取信息错误')
        // this.$message.success('获取用户信息成功')
       //将获取到的数据存储在 data 函数中
       this.list =  res.data
    },
    //退出登录
    logout(){
      //1.绑定事件函数
      //2.提示询问框
       this.$confirm('您是否要退出么, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          //3. 清空 vuex 中的 token,插件会自动更新
          this.$store.commit('ToKen', '')
          this.$store.commit('ubDataUserInfo', {})
          //4. 跳转到登录页面
          this.$router.push('/login')
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });          
        });
    }

  }
}
</script>

<style lang="less" scoped>
.main-container {
  height: 100%;
  .el-header,
  .el-aside {
    background-color: #23262e;
  }
  // 左侧边栏用户信息区域
  .user-box {
    height: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-top: 1px solid #000;
    border-bottom: 1px solid #000;
    user-select: none;
    img {
      width: 35px;
      height: 35px;
      border-radius: 50%;
      background-color: #fff;
      margin-right: 15px;
      object-fit: cover;
    }
    span {
      color: white;
      font-size: 12px;
    }
     
  }
  // 侧边栏菜单的样式
    .el-aside {
    .el-submenu,
    .el-menu-item {
      width: 200px;
      user-select: none;
    }
  }
  .el-header {
    padding: 0;
    display: flex;
    justify-content: space-between;
  }
  .el-main {
    overflow-y: scroll;
    height: 0;
    background-color: #F2F2F2;
  }
  .el-footer {
    background-color: #eee;
    font-size: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}

.avatar {
  border-radius: 50%;
  width: 35px;
  height: 35px;
  background-color: #fff;
  margin-right: 10px;
  object-fit: cover;
}
</style>